# Copyright 2009 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Bootstrap for running a Django app under Google App Engine.

The site-specific code is all in other files: settings.py, urls.py,
models.py, views.py.  And in fact, only 'settings' is referenced here
directly -- everything else is controlled from there.

"""

# Standard Python imports.
import logging
import os
import sys

logging.debug("Trace into Loading %s", __name__)

logging.info("install django helper begin...")
from appengine_django import InstallAppengineHelperForDjango
InstallAppengineHelperForDjango()
logging.info("install django helper end")



# Google App Engine imports.
from google.appengine.ext.webapp import util

# Import the part of Django that we use here.
import django.core.handlers.wsgi
logging.info("import django end")
# More logging
def log_exception(*args, **kwds):
  """Django signal handler to log an exception."""
  cls, err = sys.exc_info()[:2]
  logging.exception('Exception in request: %s: %s', cls.__name__, err)
      
import django.core.signals
logging.info("log_exception begin")
# Log all exceptions detected by Django.
django.core.signals.got_request_exception.connect(log_exception)
logging.info("log_exception end")


def main():
  logging.info("Trace into main calling...")
  # we only want to do this once, but due to weird method
  # caching behavior it sometimes gets blown away
  # Create a Django application for WSGI.
  logging.info("Create django app being...")
  application = django.core.handlers.wsgi.WSGIHandler()
  logging.info("Create django app endq        ")
  # Run the WSGI CGI handler with that application.
  util.run_wsgi_app(application)
  logging.info("Trace out main calling...")
if __name__ == '__main__':
  try:
    main()
    #profile_main()
  except:
    exc_info = sys.exc_info()
    logging.critical("Got to the end!: %s", str(exc_info))
    raise
